24 hrs later, I have strong fermentation...and a strong smell. It is hard to explain...almost a chemical smell, initially, that can take your breath away...not quite plastic (as I've read that brett b gives off)...the smell finishes almost like the way the carbonation tastes in cola...weird, I know.

You might be just getting a nose full of CO2 with all the other byproducts mixed in.

Kinda what I was thinking...figuring that CO2, in high doses, probably emits a chemical-like smell. This is the most vigorous fermentation I've seen, in the 30+ batches I've brewed...and it is beautiful.

24 hrs later, I have strong fermentation...and a strong smell. It is hard to explain...almost a chemical smell, initially, that can take your breath away...not quite plastic (as I've read that brett b gives off)...the smell finishes almost like the way the carbonation tastes in cola...weird, I know.

Anyone else experienced this?

To answer your initial question. YES! I have been experimenting with a few beers using brett B. I am getting this smell that is almost exactly like you describe. I want to call it plastic, but that is not quite accurate. Maybe somewhere more like a soft plastic (ziplock bags) and leather, maybe like pleather. It is very artificial smelling. It is a dull smell, not sharp or biting, but soft and dull. It's very hard to describe, but I think it's the same thing I am smelling. It is not a smell I enjoy in my beer, and I think i'm going to switch away from brett b, or at least the strains available commercially. I'll stick to using orval dregs for brett b.